Rowing coach Bill Tait reveals some of the technology the Victorian Institute of Sport is using to monitor the performance of rowers, including a GPS, rowing computer, biomechanics box, heart rate monitor and a camera.

Czech Republic production manager Jaromir Noval explains how computers were used to design a life-size Lego model of an X-Wing Starfighter - based on the Lego set 9493 itself. And US project manager Dale Chasses reveals it took 17,000 hours to build the 14m-long 20-tonne Star Wars fighter, captured here in a time-lapse video.

Have you ever stopped to wonder why flowers and fruits come in so many amazing colours Well Jason Goodger, a plant researcher from University of Melbourne, will take you through how and why fruits and flowers vary in so many colours.

Colour blindness is when people are unable to distinguish between certain colours, and the most common form of this disorder is red/green colour blindness. Paul Martin, a vision scientist from the University of Melbourne, explains what causes it and the types of colour blindness out there.

From birds and mammals to fish and frogs, lots of different animals can change their colour. Jessie Sinclair, a zoologist from the Melbourne Museum, will talk you through how and why animals can do this.